1. She *had finished* her homework before dinner. (Tipp: Verwende „had“ + Partizip Perfekt)
2. They *had left* the house when I arrived. (Tipp: „had“ + Verb in der dritten Form)
3. I *had never seen* such a beautiful sunset before. (Tipp: „had“ + „never“ + Partizip Perfekt)
4. We *had already eaten* when the guests came. (Tipp: „had“ + „already“ + Partizip Perfekt)
5. He *had lost* his keys before he went out. (Tipp: „had“ + Partizip Perfekt)
6. The train *had departed* by the time we got to the station. (Tipp: „had“ + Partizip Perfekt)
7. You *had studied* Korean before moving to Seoul. (Tipp: „had“ + Partizip Perfekt)
8. She *had cleaned* the room before her friends arrived. (Tipp: „had“ + Partizip Perfekt)
9. We *had finished* the project before the deadline. (Tipp: „had“ + Partizip Perfekt)
10. They *had gone* to bed when the phone rang. (Tipp: „had“ + Partizip Perfekt)

1. By the time I called, she *had left* the office. (Tipp: Handlung vor einem bestimmten Zeitpunkt in der Vergangenheit)
2. He *had studied* for hours before the exam started. (Tipp: „had“ + Partizip Perfekt)
3. We *had visited* that museum before our trip to Busan. (Tipp: Vergangene Handlung vor einer anderen)
4. They *had cleaned* the house before the party began. (Tipp: „had“ + Partizip Perfekt)
5. I *had forgotten* my wallet at home before going shopping. (Tipp: „had“ + Partizip Perfekt)
6. She *had cooked* dinner when her guests arrived. (Tipp: Handlung vor einem anderen Ereignis)
7. The children *had gone* to sleep before the movie started. (Tipp: „had“ + Partizip Perfekt)
8. We *had finished* our work before the meeting began. (Tipp: „had“ + Partizip Perfekt)
9. He *had already left* the station when I arrived. (Tipp: „had“ + „already“ + Partizip Perfekt)
10. You *had never tried* kimchi before your trip to Korea. (Tipp: „had“ + „never“ + Partizip Perfekt)